CN113909009A - Spraying device - Google Patents

Abstract

Provided is a shower device capable of realizing a desired discharge form. A shower device having a water spray plate, wherein a plurality of water spray holes penetrating the water spray plate are arranged in a circumferential shape at intervals on a water spray surface of the water spray plate; when the water spray surface is viewed in a plane, the direction in which a center line connecting the opening centers of the upstream and downstream ends of the plurality of water spray holes extends includes an inclination component with respect to the normal direction of the circumference of each water spray hole; the dimension of a through region, which linearly penetrates from an upstream end opening to a downstream end opening of each of the plurality of water discharge holes in the thickness direction of the water discharge plate, in the lateral direction in a cross section including the center line is set to be equal to or greater than a predetermined lower limit value and equal to or less than a predetermined upper limit value.

Description

Spraying device

Technical Field

The present invention relates to a shower apparatus.

Background

As a conventional shower device, for example, a device described in patent document 1 is known. The shower device disclosed in patent document 1 includes a water spray plate having a water spray surface having a rectangular shape in plan view and a predetermined width and length, and a plurality of water spray holes formed to penetrate the water spray surface. The water discharge direction of each of the plurality of water discharge holes is directed outward in the width direction as it goes from the inside to the outside in the width direction of the water discharge surface. With this configuration, the shower water flows so as to spread outward from the water discharge surface.

Patent document 1: japanese patent laid-open publication No. 2016-

Disclosure of Invention

Recently, various forms of water discharge have been required, including the form of water discharge by spraying as disclosed in patent document 1. There is room for improvement in achieving a desired effluent form.

Accordingly, an object of the present invention is to solve the above-described problems and provide a shower device capable of realizing a desired discharge pattern.

In order to achieve the above object, a shower apparatus according to the present invention includes a water spray plate, wherein a plurality of water spray holes penetrating the water spray plate are arranged in a circumferential shape at intervals on a water spray surface of the water spray plate; a direction in which a center line connecting an opening center of an upstream end and an opening center of a downstream end of each of the plurality of water discharge holes extends includes an inclination component with respect to a normal direction of the circumference of each water discharge hole when the water discharge surface is viewed in a plan view; the dimension of a through region, which linearly penetrates the upstream end opening to the downstream end opening of each of the plurality of water discharge holes in the thickness direction of the water discharge plate, is set to be equal to or greater than a predetermined lower limit value and equal to or less than a predetermined upper limit value in a transverse direction in a cross section including the center line.

Effects of the invention

According to the shower apparatus of the present invention, a desired discharge form can be realized.

Drawings

Fig. 1 is a perspective view of a shower device according to embodiment 1.

Fig. 2 is a plan view schematically showing a water spray plate according to embodiment 1.

Fig. 3 is an enlarged view of a portion of fig. 2.

Fig. 4 is a view from a-a of fig. 2.

Fig. 5 is a diagram showing a form of shower water of the shower apparatus according to embodiment 1.

Fig. 6 is a plan view schematically showing a water spray plate of a comparative example.

Fig. 7 is a plan view schematically showing a water spray plate according to embodiment 1.

Fig. 8 is a view from B-B of fig. 7.

Fig. 9 is a graph showing the results of an experiment concerning the relationship between the lateral dimension of the penetration space and the water outlet angle using the shower device according to embodiment 1.

Fig. 10 is a perspective view of the shower device according to embodiment 2.

Fig. 11A is a schematic longitudinal sectional view of a modified example of the spout hole.

Fig. 11B is a schematic longitudinal sectional view of a water spout according to another modification.

Fig. 11C is a schematic longitudinal sectional view of a water spout hole according to still another modification.

Fig. 11D is a schematic longitudinal sectional view of a water spout according to still another modification.

Fig. 12 is a plan view of a shower device provided with a water spray plate according to embodiment 3.

Fig. 13 is a plan view of the water spray plate as viewed from the back side opposite to fig. 12.

Fig. 14 is an enlarged view of a portion of fig. 13.

Fig. 15 is a perspective view showing a cross section of the water spray plate shown in fig. 13 at a predetermined position.

Fig. 16 is an enlarged view of a portion I of fig. 12 and 13.

FIG. 17A is a K-K view of the 1 st through hole of FIG. 16.

FIG. 17B is an L-L view of the 2 nd through hole of FIG. 16.

FIG. 17C is an M-M view of the 3 rd through hole of FIG. 16.

Fig. 18 is a diagram showing an example of the discharge form of the water spray plate according to embodiment 3.

Fig. 19A is a view showing a penetrating region of the 1 st through hole having the same cross section as fig. 17A.

Fig. 19B is a view showing a penetrating region of the 2 nd through hole having the same cross section as that of fig. 17B.

Fig. 19C is a view showing a penetrating region of the 3 rd through hole having the same cross section as that of fig. 17C.

Description of the reference symbols

2 spray device

4 water spraying plate

5 Water spray surface

8 ceiling

9 circumference of

10 blowhole

11 center

12 downstream opening

14 upstream opening

16 open center

18 open center

20 center line

21 back side of the plate

22 1 st bend

23 vertical direction

24 nd 2 nd bend

30 water spraying plate

32 blowhole

32A downstream opening

32B upstream opening

34 straight line part

36 center line

40 water spraying plate

42. 44 plate member

46. 48 openings

49 center line

50 water spraying plate

52 blowhole

52A downstream opening

52B upstream opening

54 1 st straight line part

56 nd 2 nd straight line part

58 center line

60 water spraying plate

62 blowhole

62A downstream opening

62B upstream opening

64. 66 straight line part

68 center line

70 spray device

72 water spraying plate

74 Water spray surface

76 blowhole

80 spraying device

81 st through-hole group

81J 1 st through hole (1 st water jet)

82 nd 2 nd group of through-holes

82J 2 nd through hole (2 nd water jet hole)

83 No. 3 through-hole group

83J 3 rd through hole (3 rd water jet hole)

84 water spraying plate

85 water spraying surface

86A downstream opening

86B upstream opening

87 discharge direction (center line)

88A downstream opening

88B upstream opening

89 discharge direction (center line)

90A downstream opening

90B upstream opening

91 discharge direction (center line)

92. 93, 94 circumference

96 area of convergence

98 divergent zone

100 water spray plate

102 water spraying surface

104 water jet hole

105 center

106 downstream opening

Circumference of 107

108 upstream opening

109 open center

110 center line

111 open center

200 through region

202 inner edge part 1

204 inner edge part 2

206 flow (vertical direction)

210 water spray plate

212 blowhole

212A downstream opening

212B upstream opening

214 straight line part

215 curved part

216 straight line part

217 bending part

218 center line

220 back side

222 st through region

224 nd 2 nd pass-through region

226 No. 3 through region

Direction of F, G plane

T, X thickness direction

P normal direction

Component of inclination of P1 with respect to the normal direction

Direction of Q tangent

Component of the slope of Q1 with respect to the tangential direction

R circumferential direction

R1 one side circumferential direction

Circumferential direction of the other side of R2

Normal directions of U1, U2 and U3

Inclination component of α 1, α 2, α 3 with respect to the normal direction

Inclination component of β 1, β 2, β 3 with respect to the thickness direction

X, X1, X2, X3 transverse dimension

Detailed Description

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiment.

(embodiment mode 1)

Fig. 1 is a schematic perspective view of a shower device 2 according to embodiment 1.

The shower apparatus 2 shown in fig. 1 is a shower apparatus for a bathroom used in a bathroom. The shower device 2 shown in fig. 1 is particularly a top-spray type shower device fixedly attached to a ceiling 8 of a bathroom. As shown in fig. 1, the shower device 2 includes a water spray plate 4.

The water spray plate 4 is a plate-like member for spraying water. The water spray plate 4 has a water spray surface 5. The water spray surface 5 is a surface on one side of the water spray plate 4 and is provided to face downward. The "water-spraying surface" may also be referred to as "water-outlet surface", etc.

As shown in fig. 1, a plurality of water jetting holes 10 are formed in the water jetting surface 5. The water jetting holes 10 are through holes penetrating the water jetting plate 4, and extend from the water jetting surface 5, which is the front surface (outflow surface) of the water jetting plate 4, to the back surface (inflow surface). The plurality of water ejection holes 10 shown in fig. 1 are arranged in a circumferential shape.

In the shower device 2 according to embodiment 1, the structure of the water jetting hole 10 is designed elaborately. Specifically, the description will be given with reference to fig. 2 to 5.

Fig. 2 is a schematic plan view of the water spray plate 4. Fig. 2 schematically shows a plurality of water discharge holes 10, and the number of water discharge holes 10 is also simplified.

As shown in fig. 2, when the water discharge surface 5 is viewed in plan, the plurality of water discharge holes 10 are arranged at intervals from each other, and are arranged in a circumferential shape so as to overlap with the circumference 9 as an imaginary line. The center 11 of the circumference 9 is the center of the water emitting surface 5.

The spout holes 10 form a downstream opening 12 as an opening of a downstream end and an upstream opening 14 as an opening of an upstream end, respectively. The downstream opening 12 is opened in the water discharge surface 5, and the upstream opening 14 is opened in the rear surface of the water discharge plate 4 facing the water discharge surface 5. Water passing through the water jet 10 flows from the upstream opening 14 toward the downstream opening 12 (reference numeral 20). In embodiment 1, the downstream opening 12 and the upstream opening 14 are circular openings having substantially the same radius.

When the water discharge surface 5 is viewed in plan as shown in fig. 2, the downstream opening 12 and the upstream opening 14 of each water discharge hole 10 are arranged offset from each other. Specifically, the description will be given with reference to fig. 3 and 4.

Fig. 3 is an enlarged view of a portion of fig. 2, showing 1 water jet hole 10. Fig. 4 is a view from a-a of fig. 2.

As shown in fig. 3 and 4, the opening center 16 is located at the center of the downstream opening 12, and the opening center 18 is located at the center of the upstream opening 14. In embodiment 1, the opening center 16 of the downstream opening 12 is set to overlap with the circumference 9. As shown in fig. 3 and 4, the downstream opening 12 and the upstream opening 14 are arranged offset by offsetting the opening centers 16 and 18 in the plane direction F of the water jet plate 4.

As shown in fig. 4, the water spout 10 according to embodiment 1 is formed by etching a plate-like member from both sides. The inner circumferential surface of the sprinkler plate 4 forming the sprinkler hole 10 has a 1 st bent portion 22 and a 2 nd bent portion 24. The 1 st bent portion 22 is formed by etching the water spray plate 4 from the water spray surface 5. The 2 nd bent portion 24 is formed by etching the water spray plate 4 from the back surface 21.

Here, a straight line connecting the opening center 16 and the opening center 18 is assumed as a center line 20. The centerline 20 is substantially aligned with the direction of travel of the water in the spout 10. As described above, since the opening centers 16 and 18 are offset in the plane direction F of the water spray plate 4, the center line 20 extends so as to be inclined with respect to the thickness direction T (fig. 4) of the water spray plate 4.

Returning to fig. 3, the direction in which the center line 20 extends when viewed in plan with respect to the water jet surface 5 has an inclination component P1 with respect to the normal direction P of the circumference 9, and also has an inclination component Q1 with respect to the tangential direction Q of the circumference 9. In particular, by having the inclination component P1 with respect to the normal direction P, a different form of shower water from the normal shower water can be realized. Specifically, the description will be given with reference to fig. 5.

Fig. 5 is a diagram showing an example of the form of the shower outlet of the shower device 2 according to embodiment 1. As shown in fig. 5, a film is generated in which the shower flows downward from each of the plurality of water ejection holes 10 while swirling in the circumferential direction R.

In embodiment 1, as shown in fig. 3 in particular, the inclination component P1 of the center line 20 with respect to the normal direction P of the circumference 9 is set to a direction toward the circumferential direction R1, and as shown in fig. 2, the inclination component is set to the same circumferential direction R1 in all the water jet holes 10. This makes it possible to align the direction in which the water discharged from the spout hole 10 swirls with the circumferential direction R1, and to generate a spiral flow as shown in fig. 5, thereby realizing shower water having a good appearance. In embodiment 1, the case where the inclination component P1 of the center line 20 is unified into the circumferential direction R1 has been described, but a design change such as changing to the circumferential direction R2 in the opposite direction to the circumferential direction R1 may be made.

As for the inclination component Q1 that the center line 20 has, the direction in which the center line 20 extends from the upstream side to the downstream side as shown in fig. 3 is set to a direction that is farther from the center 11 (fig. 2) of the circumference 9 than the tangential direction Q of the circumference 9. As shown in fig. 2, the inclination directions are set to be the same for all the water discharge holes 10. This can make the direction uniform so that the water discharged from the water discharge hole 10 moves in a direction away from the center 11 of the circumference 9, and can generate a flow spreading outward as it moves downward as shown in fig. 5. As a result, a spiral flow can be generated which spreads outward from the spout hole 10 and flows downward while revolving in the circumferential direction R, and shower water having a good appearance can be realized.

The angle of the inclination component P1 shown in fig. 3 may be set to, for example, 5 degrees or more and 175 degrees or less. This can generate a flow at an appropriate inclination angle.

The angle α formed by the center line 20 and the vertical direction 23 shown in fig. 4 may be set to, for example, 5 degrees or more and 45 degrees or less. This can generate a flow at an appropriate inclination angle.

In addition, the angle β formed by the center lines 20 of the adjacent 2 water ejection holes 10 among the plurality of water ejection holes 10 shown in fig. 2 may be set to 0.15 degrees or more and 175 degrees or less, for example. Thus, the interval between the water discharge holes 10 can be set appropriately. At the same time, the water ejected from the water ejection holes 10 can be prevented from merging immediately, a film of shower can be formed as shown in fig. 5, and shower water having good appearance can be realized.

Next, fig. 6 shows a structure of a comparative example. Fig. 6 is a plan view schematically showing a water spray plate 100 of a comparative example.

As shown in fig. 6, a plurality of water jetting holes 104 are formed in the water jetting surface 102 of the water jetting plate 100. The plurality of water jetting holes 104 are arranged in a circumferential shape and are arranged on a circumference 107 with respect to the center 105 of the water jetting surface 102.

The blowholes 104 form downstream openings 106 and upstream openings 108, respectively. A straight line connecting an opening center 109 of the downstream opening 106 and an opening center 111 of the upstream opening 108 is defined as a center line 110. As shown in fig. 6, when the water discharge surface 102 is viewed in plan, the center line 110 of the water discharge hole 104 coincides with the normal direction of the circumference 107 of the water discharge hole 104. That is, the direction in which the center line 110 extends in plan view does not have an inclination component with respect to the normal direction of the circumference 107. With this configuration, the water ejected from the plurality of water ejection holes 104 travels downward without being swirled in the circumferential direction S while spreading outward away from the center 105.

In contrast, according to the shower apparatus 2 of embodiment 1, the center line 20 is provided with the inclination component P1 with respect to the normal direction P of the circumference 9, so that the swirl component in the circumferential direction R can be generated, and the form of the shower water can be realized which is different from the form of the normal shower water.

In the present embodiment, the desired discharge pattern is realized by focusing attention on the lateral dimension of the through region extending from the upstream opening 14 to the downstream opening 12 of the spout hole 10 in a straight line along the thickness direction T, and setting the lower limit value and the upper limit value of the dimension. Specifically, the description will be given with reference to fig. 7 and 8.

Fig. 7 is a plan view schematically showing the water spray plate 4 according to embodiment 1, and fig. 8 is a view taken along direction B-B of fig. 7. The cross section shown in fig. 8 is the same cross section as fig. 4, and includes the center line 20 described above.

As shown in fig. 7 and 8, the water spray holes 10 each have a through region 200 that penetrates the water spray plate 4 in the thickness direction T. The through region 200 is a region that passes through the upstream opening 14 to the downstream opening 12 of the spout hole 10 in a straight line along the thickness direction T of the spout plate 4.

In the cross section shown in fig. 8, the through region 200 has a dimension X in a direction along the plane direction F of the water spray plate 4, i.e., in the lateral direction. The dimension X is defined by the distance in the plane direction F between the 1 st inner edge 202, on which the 1 st bent portion 22 protrudes inward, and the 2 nd inner edge 204, on which the 2 nd bent portion 24 protrudes inward.

In the present embodiment, a lower limit value and an upper limit value are set for the dimension X in the lateral direction of the through region 200 in the cross section shown in fig. 8, and the plurality of watering holes 10 are formed such that the dimension X of the through region 200 of each of the plurality of watering holes 10 is equal to or greater than the lower limit value and equal to or less than the upper limit value.

With such a design, in the structure in which water is discharged obliquely from the spout hole 10, it is possible to secure an oblique discharge angle while suppressing clogging of the spout hole 10 with water.

By setting the dimension X to be equal to or greater than the lower limit value, when water passes through the water discharge hole 10 along the center line 20, a space through which water passes can be ensured. This can prevent water from clogging while allowing water to smoothly pass therethrough. Further, by setting the dimension X to be equal to or smaller than the upper limit value, when water passes through the spout hole 10 along the center line 20, the flow rate of the water flow 206 that passes vertically downward along the thickness direction T can be restricted, and a discharge angle with respect to a deviation in the thickness direction T can be secured.

Fig. 9 shows an example of an experimental result in the case where an experiment concerning the relationship between the lateral dimension X of the penetration region 200 and the outlet water angle is performed using the water spray plate 4 of embodiment 1. FIG. 9 is a graph with dimension X (unit: mm) on the horizontal axis and water discharge angle (unit: degree) on the vertical axis. The detailed conditions of the experiment are not described.

As shown in fig. 9, a target discharge angle is set in advance with respect to the discharge angle from the water discharge hole 10. With a dimension X of 0.4mm or less, a water exit angle above the target water exit angle is achieved. On the other hand, when the dimension X is larger than 0.4mm, the water discharge angle becomes smaller than the target water discharge angle. If the water discharge angle is lower than the target water discharge angle, the water tends to flow vertically downward, and it is difficult to achieve a skewed water discharge angle.

The reason why the water discharge angle is decreased when the dimension X is increased is that, as described with reference to fig. 8, the flow rate of the water flow 206 that attempts to pass vertically downward along the thickness direction T is increased, and the flow vertically downward is dominant.

In the present embodiment, the lower limit of the dimension X is set to 0.1mm, and the upper limit is set to 0.4 mm. The plurality of water discharge holes 10 are formed by controlling the transverse dimension X of the through region 200 to be in the range of 0.1mm to 0.4mm in each of the plurality of water discharge holes 10. With such a setting, when water is discharged obliquely from the spout hole 10, an oblique discharge angle can be achieved while suppressing clogging of water.

In the present embodiment, a set value (for example, 0.3mm) is determined by a value from the lower limit value of 0.1mm to the upper limit value of 0.4mm, and the plurality of watering holes 10 are formed so that the dimension X of the through region 200 becomes substantially the same set value in each of the plurality of watering holes 10. By setting as described above, the outlet angle and the flow rate from each spout hole 10 can be made uniform by making the dimension X in the lateral direction of the penetration region 200 uniform.

As described above, according to the shower apparatus 2 of the present embodiment, the plurality of the shower holes 10 are respectively configured such that the dimension X in the lateral direction in the cross section including the center line 20 is equal to or larger than the predetermined lower limit value and equal to or smaller than the predetermined upper limit value with respect to the dimension of the through region 200 in which the upstream opening 14 to the downstream opening 12 of each of the plurality of the shower holes 10 linearly penetrate along the thickness direction T of the shower plate 4.

With such a configuration, when water is discharged obliquely from the spout 10, an oblique discharge angle can be secured while suppressing clogging of water, and a desired discharge pattern can be realized.

(embodiment mode 2)

A shower apparatus according to embodiment 2 of the present invention will be described. In embodiment 2, the differences from embodiment 1 will be mainly described, and descriptions overlapping with embodiment 1 will be omitted.

While the plurality of water jetting holes 10 are arranged in 1 circle in embodiment 1, embodiment 2 differs in that a plurality of water jetting holes other than the plurality of water jetting holes 10 are formed in a circle.

Fig. 10 is a perspective view of a shower device 70 according to embodiment 2. The shower device 70 shown in fig. 10 includes a water spray plate 72, and a group of water spray holes 76 is formed on a water spray surface 74 of the water spray plate 72 in addition to the group of the plurality of water spray holes 10. When the water discharge surface 74 is viewed in plan, the plurality of water discharge holes 76 are arranged in a circumferential shape concentrically with the 1 st water discharge hole 10 and at intervals from each other. The plurality of blowholes 10 is the 1 st blowhole and the plurality of blowholes 76 is the 2 nd blowhole. In embodiment 2, the 2 nd spout hole 76 is disposed inside the 1 st spout hole 10. With this configuration, by discharging water from the water discharge holes 10 and 76, a double-shower film can be formed, and a shower discharge mode different from the usual mode can be realized.

In the shower apparatus 70 shown in fig. 10, the inclination angle of the 2 nd water jetting hole 76 is also set in the same manner as the inclination angle of the 1 st water jetting hole 10 described in embodiment 1. Specifically, when the spout surface 74 is viewed in plan, the direction in which the center line connecting the opening center of the upstream end and the opening center of the downstream end of each of the 2 nd spout holes 76 extends includes an inclination component with respect to the normal direction of the circumference in each of the 2 nd spout holes 76. With this configuration, not only the plurality of water jetting holes 10 but also the plurality of water jetting holes 76 can generate a spiral flow, and other shower patterns can be realized.

In the shower device 70 shown in fig. 10, the 2 nd spout hole 76 is configured by applying the same lower limit value and the same upper limit value of the dimension X of the penetrating region 200 of the 1 st spout hole 10 described in embodiment 1. With this configuration, not only the 1 st water discharge hole 10 but also the 2 nd water discharge hole 76 can secure a skewed water discharge angle while suppressing clogging of the water discharge hole 10, and can realize a desired water discharge pattern.

The present invention is not limited to the above embodiments, and can be implemented in various other embodiments. For example, in embodiment 1, a description has been given of a case where the watering hole 10 is formed by etching and the watering hole 10 having the bent portions 22 and 24 as shown in fig. 4 is provided, but the present invention is not limited to this case. The water jetting holes may be formed by any method other than etching, and for example, the water jetting holes having the shapes shown in fig. 11A to 11D may be formed.

In the water spray plate 30 shown in fig. 11A, the inner peripheral surface of the water spray plate 30 forming the water spray holes 32 has a linear portion 34 inclined linearly. A center line 36 as a straight line connecting the opening center of the downstream opening 32A and the opening center of the upstream opening 32B of the spout hole 32 extends in a direction inclined with respect to the vertical direction. The water ejection hole 32 having such a shape can be formed by, for example, machining by 5-axis machining, laser machining, or the like.

The water spray plate 40 shown in fig. 11B is formed by laminating two plate members 42 and 44. Plate member 42 defines an opening 46 and plate member 44 defines an opening 48. The 1 water jet hole 45 is formed by the opening 46 and the opening 48. The openings 46 and 48 are arranged offset in the surface direction G of the water spray plate 40. A center line 49, which is a straight line connecting the opening center at the upstream end of the opening 46 and the opening center at the downstream end of the opening 48, extends in a direction inclined with respect to the vertical direction. The water jetting holes 45 having such a shape can be formed by, for example, press bonding of the plate members 42, 44.

In the water spray plate 60 shown in fig. 11C, the inner peripheral surface of the water spray plate 60 forming the water spray holes 62 has linear portions 64 and 66 having asymmetrical cross-sectional shapes. The linear portion 64 extends along the Y direction, which is the thickness direction of the water spray plate 60, and the linear portion 66 extends in a direction inclined with respect to the Y direction. A center line 68 as a straight line connecting the opening center of the downstream opening 62A and the opening center of the upstream opening 62B of the spout hole 62 extends in a direction inclined with respect to the vertical direction. The water jetting holes 62 having such a shape can be formed by, for example, resin molding.

In the sprinkler plate 210 shown in fig. 11D, the inner peripheral surface of the sprinkler plate 210 forming the sprinkler hole 212 has linear portions 214 and 216 and curved portions 215 and 217 having asymmetrical cross-sectional shapes. The linear portion 214 extends along the Y direction, which is the thickness direction of the water spray plate 210, and the linear portion 216 extends in a direction inclined with respect to the Y direction. The curved portion 215 is curved so as to extend outward from the linear portion 214 toward the upstream opening 212B, and the curved portion 217 is curved so as to extend outward from the linear portion 216 toward the upstream opening 212B. A center line 218, which is a straight line connecting the opening center of the downstream opening 212A and the opening center of the upstream opening 212B of the spout hole 212, extends in a direction inclined with respect to the vertical direction. The water jetting hole 212 having such a shape can be formed by, for example, resin molding.

The same flow as that of the water jet shown in fig. 5 can be generated in the water jet holes 32, 45, 62, 212 shown in fig. 11A to 11D by designing the center lines 36, 49, 68, 218 so as to have an inclination component P1 with respect to the normal direction P of the circumference 9 as shown in fig. 3.

In embodiment 1, the description has been given of the case where the direction in which the center line 20 of each water discharge hole 10 extends from the upstream side to the downstream side is directed to the direction farther from the center 11 of the circumference 9 than the tangential direction Q of the circumference 9 of each water discharge hole 10 as shown in fig. 3, but the present invention is not limited to this case. For example, when the water discharge surface 5 is viewed in plan, the direction in which the center line 20 of each water discharge hole 10 extends from the upstream side to the downstream side may be directed closer to the center 11 of the circumference 9 than the tangential direction Q of the circumference 9 of each water discharge hole 10. In this case, a sprayed film can be formed so as to be narrowed inward from the plurality of water ejection holes 10. Alternatively, the direction in which the center line 20 of each water discharge hole 10 extends may be aligned with the tangential direction Q of the circumference 9 of each water discharge hole 10 when the water discharge surface 5 is viewed in plan. In this case, the inclination angle of the spout 10 can be set with reference to the tangential direction Q of the circumference 9, and the design becomes easy.

In embodiment 1, the description has been given of the case where the angle of the inclination component P1 shown in fig. 3, the angle of the inclination component Q1, and the angle α shown in fig. 4 are the same value for all the water discharge holes 10, but the present invention is not limited to this case. The angles may be set to different values for each water jetting hole 10.

In embodiment 2, the case where two water discharge hole groups of the plurality of water discharge holes 10 and the plurality of water discharge holes 76 are provided has been described, but the present invention is not limited to this case, and another water discharge hole group may be provided. That is, a film having a weight of 3 or more may be formed by spraying. An example of a structure for forming a 3-fold shower film is described in embodiment 3 below.

In embodiments 1 and 2, the case where the shower device 2 is a top-spray type shower device fixed to the ceiling 8 of a bathroom has been described, but the present invention is not limited to this case. For example, any shower device such as a hand-held shower device used by a user holding the shower device may be used.

The above modification can be similarly applied to embodiment 3 below.

(embodiment mode 3)

A water spray plate and a shower apparatus including the same according to embodiment 3 of the present invention will be described. In embodiment 3, differences from embodiments 1 and 2 will be mainly described, and descriptions overlapping with embodiments 1 and 2 will be omitted.

The embodiment 1 is different in that the groups of the water discharge holes 10 are arranged in a circumferential shape, the embodiment 2 is different in that the groups of the water discharge holes 10 and the groups of the water discharge holes 76 are arranged in a circumferential shape, and the embodiment 3 is different in that the groups of the 3 water discharge holes are arranged in a circumferential shape.

Fig. 12 is a plan view of the shower device 80 according to embodiment 3. The shower apparatus 80 shown in fig. 12 includes a water spray plate 84, and 3 sets of through- hole groups 81, 82, and 83 are formed on a water spray surface 85 of the water spray plate 84. The "through-hole" may also be referred to as a "water jet hole". The shower device 80 shown in fig. 12 is a shower device used as a faucet in a toilet, a kitchen, or the like.

The 1 st through hole group 81 is composed of a plurality of through holes arranged in a circumferential shape at the outermost side, the 2 nd through hole group 82 is composed of a plurality of through holes arranged in a circumferential shape at the center, and the 3 rd through hole group 83 is composed of a plurality of through holes arranged in a circumferential shape at the innermost side. The 2 nd through hole group 82 is disposed inside the 1 st through hole group 81, and the 3 rd through hole group 83 is disposed inside the 2 nd through hole group 82.

In embodiment 3, the through holes constituting the 1 st, 2 nd and 3 rd through hole groups 81, 82 and 83 are circular in plan view. The number of through holes constituting the 1 st, 2 nd and 3 rd through hole groups 81, 82 and 83 is the same. The through holes of the 1 st, 2 nd, and 3 rd through hole groups 81, 82, and 83 are arranged in a row along the radial direction H of the water ejection surface 85.

Fig. 13 is a plan view of the water spray plate 84 as viewed from a back surface 220 opposite to that of fig. 12.

As shown in fig. 13, when the rear surface 220 is viewed in plan, the through holes constituting the 1 st through hole group 81, the 2 nd through hole group 82, and the 3 rd through hole group 83 are all formed in an opening shape different from a circular shape. In embodiment 3, the opening shape of each through hole of the back surface 220 is a long hole shape, and is provided in an orientation uniformly inclined with respect to the radial direction H. The inclination angles of the long hole shapes of the 1 st, 2 nd, and 3 rd through hole groups 81, 82, and 83 are set to be different from each other.

Fig. 14 shows an enlarged view of a part of fig. 13, fig. 15 shows a perspective view showing a cross section of the water spray plate 84 shown in fig. 13 at a predetermined position, and fig. 16 shows an enlarged view of a part I of fig. 12 and 13.

As shown in fig. 14 and 15, each of the through holes constituting the 1 st, 2 nd, and 3 rd through hole groups 81, 82, and 83 has a long hole shape on the upstream side and a circular shape on the downstream side, and has a tapered shape that narrows from the upstream to the downstream. When the rear surface 220 is viewed in plan as shown in fig. 14, the upstream-side long hole shape of each through hole includes the entire downstream-side circular shape. The shape of the elongated hole is a combination of a circular arc shape and a straight line shape.

As shown in fig. 16, the 1 st through hole (1 st spout hole) 81J constituting the 1 st through hole group 81 is arranged on the circumference 92, and forms a downstream opening 86A as an opening at a downstream end and an upstream opening 86B as an opening at an upstream end. The downstream opening 86A is a circular opening formed in the water discharge surface 85, and the upstream opening 86B is a long hole opening formed in the rear surface 220. The water passing through the 1 st through hole 81J flows in the discharge direction 87 from the upstream opening 86B toward the downstream opening 86A. The ejection direction 87 substantially coincides with a center line connecting the opening center of the upstream opening 86B and the opening center of the downstream opening 86A.

Similarly, the 2 nd through hole (2 nd spout hole) 82J constituting the 2 nd through hole group 82 is arranged on the circumference 93, and forms a downstream opening 88A as an opening of a downstream end and an upstream opening 88B as an opening of an upstream end. The downstream opening 88A is formed in a circular shape on the water discharge surface 85, and the upstream opening 88B is formed in a long hole shape on the back surface 220. The water passing through the 2 nd through hole 82J flows in the ejection direction 89 from the upstream opening 88B toward the downstream opening 88A. The ejection direction 89 substantially coincides with a center line connecting the opening center of the upstream opening 88B and the opening center of the downstream opening 88A.

Similarly, the 3 rd through hole (3 rd spout hole) 83J constituting the 3 rd through hole group 83 is arranged on the circumference 94, and forms a downstream opening 90A as an opening of the downstream end and an upstream opening 90B as an opening of the upstream end. The downstream opening 90A is formed in a circular shape on the water discharge surface 85, and the upstream opening 90B is formed in a long hole shape on the back surface 220. The water passing through the 3 rd through hole 83J flows in the discharge direction 91 from the upstream opening 90B toward the downstream opening 90A. The ejection direction 91 is substantially coincident with a center line connecting the opening center of the upstream opening 90B and the opening center of the downstream opening 90A.

Similarly to embodiments 1 and 2, the ejection directions 87, 89, and 91 of the 1 st through hole 81J, the 2 nd through hole 82J, and the 3 rd through hole 83J include the inclination components α 1, α 2, and α 3 with respect to the normal directions U1, U2, and U3 of the respective circles 92, 93, and 94. As a result, water is discharged in a "spiral shape" from the 1 st, 2 nd, and 3 rd through- hole groups 81, 82, and 83, respectively, and a triple spiral water discharge mode can be realized.

In embodiment 3, the ejection directions 87, 89, and 91 of the 1 st through hole 81J, the 2 nd through hole 82J, and the 3 rd through hole 83J are directed toward the center side with respect to the tangential directions of the circumferences 92, 93, and 94. That is, the water discharged from the 1 st through hole 81J, the 2 nd through hole 82J, and the 3 rd through hole 83J is discharged toward the center of the water discharge plate 85.

Further, in embodiment 3, the through holes 81J, 82J, 83J are shaped so that the inclination components α 1, α 2, α 3 with respect to the normal directions U1, U2, U3 are in a relationship of α 1> α 2> α 3. That is, the inclination component α 1 of the ejection direction 87 with respect to the normal direction U1 is larger than the inclination component α 2 of the ejection direction 89 with respect to the normal direction U2, and the inclination component α 2 of the ejection direction 89 with respect to the normal direction U2 is larger than the inclination component α 3 of the ejection direction 91 with respect to the normal direction U3.

By setting the inclination components α 1, α 2, and α 3, the through holes 81J, 82J, and 83J located on the outer side have a component that advances in the rotational direction along the circumference as the through holes become larger, and water drops toward the center of the downward water spray plate 84. The water ejected from the 1 st, 2 nd, and 3 rd through- hole groups 81, 82, and 83 converges once on the center side and then diverges in a direction away from the center. Such a triple helix shape of the outlet water can be realized.

Next, fig. 17A, 17B, and 17C show vertical sectional views of the 1 st through hole 81J, the 2 nd through hole 82J, and the 3 rd through hole 83J. Fig. 17A is a K-K view of the 1 st through hole 81J in fig. 16, fig. 17B is an L-L view of the 2 nd through hole 82J, and fig. 17C is an M-M view of the 3 rd through hole 83J.

As shown in fig. 17A, the ejection direction 87 of the water from the 1 st through hole 81J has an inclination component β 1 with respect to the thickness direction T of the water spray plate 84. Similarly, as shown in fig. 17B, the ejection direction 89 of the water from the 2 nd through hole 82J has an inclination component β 2 with respect to the thickness direction T, and as shown in fig. 17C, the ejection direction 91 of the water from the 3 rd through hole 83J has an inclination component β 3 with respect to the thickness direction T. The inclination components β 1, β 2, β 3 are all components toward the center side of the water ejection surface 85 as shown in fig. 16.

In embodiment 3, the through holes 81J, 82J, and 83J are particularly shaped so that the inclination components β 1, β 2, and β 3 with respect to the thickness direction T are in a relationship of β 1> β 2> β 3. That is, the inclination component β 1 of the ejection direction 87 is larger than the inclination component β 2 of the ejection direction 89, and the inclination component β 2 of the ejection direction 89 is larger than the inclination component β 3 of the ejection direction 91.

By setting the inclination components β 1, β 2, and β 3 as described above, the through holes 81J, 82J, and 83J located on the outer side have a component that travels in the direction parallel to the water discharge surface 85 as the size of the through holes increases, and water falls toward the center of the downward water discharge plate 84. When the water discharged from each of the 1 st, 2 nd, and 3 rd through- hole groups 81, 82, and 83 forms a spiral flow, the through-holes located on the outer side discharge water with a stronger rotational component, and the water flows toward the center of the water discharge plate 84, converges on the center, and then diverges so as to spread outward. Such a triple helix shape of the outlet water can be realized.

The structure of the through holes 81J, 82J, and 83J described above can form a triple helical flow as shown in fig. 18. As shown in fig. 18, among the through hole groups 81, 82, and 83, the more outward the through hole group is, the stronger the component toward the lateral direction, which is the direction parallel to the water ejection surface 85. The water ejected from the 1 st through hole group 81 has a stronger component in the lateral direction than the water ejected from the 2 nd through hole group 82, and the water ejected from the 2 nd through hole group 82 has a stronger component in the lateral direction than the water ejected from the 3 rd through hole group 83. Since the water ejected from the through hole groups 81, 82, and 83 all fall toward the center, the water once converges in the converging region 96 and then diverges from the diverging region 98 in a direction away from the center. When water diverges in the divergent region 98, the groups of through holes 81, 82, and 83 located on the outer side diverge in a direction away from the center.

By such a discharge form, not only aesthetic, but also part of the water sprayed with a large contact area as in the convergence region 96 and part of the water sprayed with a small contact area as in the divergence region 98 can be used separately according to the purpose of use. For example, when a finger tip or a fine stain is washed, the object can be washed without waste at a portion where water is concentrated by placing the object in the constricted region 96. On the other hand, if the object is placed in the divergent region 98, a large region such as a palm or an arm can be washed quickly. Further, in the case where the shower device 80 is provided in a large water tank, the large water tank can be efficiently flushed by using the divergent region 98.

Further, if water is discharged into the circular tub in the shower discharge form of embodiment 3, a vortex flow can be generated in the tub, and handkerchiefs and the like can be efficiently washed in the tub. In addition, when a lotion is added, the lotion can be mixed well.

Further, according to the shower outlet form of embodiment 3, since the spiral flow is triple, wind can be generated around the shower outlet form. For example, when the shower apparatus is used as a shower device in a bathroom, the user can feel the wind.

In embodiment 3 as well, as in embodiments 1 and 2, focusing on the lateral dimension of the through region that penetrates from the upstream opening to the downstream opening of the spout holes 81J, 82J, 83J in the thickness direction T, a desired discharge pattern is realized by setting the lower limit value and the upper limit value for the dimension. Specifically, description will be given with reference to fig. 19A to 19C.

Fig. 19A to 19C are cross-sectional views showing the through regions 222, 224, and 226 of the through holes 81J, 82J, and 83J, respectively, in the same cross-section as fig. 17A to 17C.

As shown in fig. 19A, each water jetting hole 81J has a 1 st through region 222 that penetrates in a straight line in the thickness direction T of the water jetting plate 84. Similarly, as shown in fig. 19B, each of the water jetting holes 82J has a 2 nd penetrating region 224 that penetrates straight in the thickness direction T of the water jetting plate 84, and as shown in fig. 19C, each of the water jetting holes 83J has a 3 rd penetrating region 226 that penetrates straight in the thickness direction T of the water jetting plate 84.

As shown in fig. 14 to 16, when the rear surface 220 of the water spray plate 84 is viewed in plan, the entire downstream opening, which is circular in the through holes constituting the water spray hole groups 81, 82, and 83, is included in the upstream opening, which is elongated hole-shaped. Therefore, as shown in fig. 19A to 19C, the 1 st through region 222 includes the entirety of the downstream opening 86A, the 2 nd through region 224 includes the entirety of the downstream opening 88A, and the 3 rd through region 226 includes the entirety of the downstream opening 90A.

In each of the cross sections of fig. 19A to 19C, the through regions 222, 224, 226 have transverse dimensions X1, X2, X3. In embodiment 3, the diameters of the downstream openings 86A, 88A, and 90A are set to be substantially the same length. Therefore, the dimensions X1, X2, and X3 of the through regions 222, 224, and 226 are substantially the same length.

In embodiment 3, the through- holes 81J, 82J, and 83J are all configured such that the dimensions X1, X2, and X3 are set to a set value (e.g., 0.3mm) between the same lower limit value (e.g., 0.1mm) or more and the same upper limit value (e.g., 0.4mm) or less as in embodiments 1 and 2. With such a design, as in embodiments 1 and 2, the flow rate of the water flow to flow in the thickness direction T through each of the water discharge holes 81J, 82J, and 83J can be limited, and a skewed water discharge angle can be ensured while suppressing clogging of water in the water discharge holes 81J, 82J, and 83J.

As described above, according to the shower apparatus 80 of embodiment 3, the dimensions of the through regions 222, 224, 226 of the plurality of water jetting holes 81J, 82J, 83J are set to the dimensions X1, X2, X3 in the lateral direction in the cross section including the jetting directions (center lines) 87, 89, 91, respectively, to be equal to or greater than the predetermined lower limit value and equal to or less than the predetermined upper limit value.

With this configuration, the lower limit value and the upper limit value of the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226 are set, so that water can be easily discharged obliquely while clogging of water passing through the water discharge holes 81J, 82J, and 83J is suppressed. This enables a desired discharge form to be achieved.

In the shower apparatus 80 according to embodiment 3, the lower limit and the upper limit of the dimensions X1, X2, and X3 are 0.1mm and 0.4mm, respectively. With this configuration, the water discharge angle can be ensured while effectively suppressing clogging of the water in the water discharge holes 81J, 82J, and 83J.

In the shower device 80 according to embodiment 3, the through regions 222, 224, and 226 of the plurality of water jetting holes 81J, 82J, and 83J include the entirety of the downstream openings 86A, 88A, and 90A. According to such a configuration, since the lateral dimensions of the downstream openings 86A, 88A, and 90A are respectively matched with the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226, the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226 can be adjusted by adjusting the dimensions of the downstream openings 86A, 88A, and 90A. This makes it possible to control the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226 with high accuracy, and to easily realize a desired discharge pattern.

In the shower device 80 according to embodiment 3, the downstream openings 86A, 88A, and 90A of the plurality of water spouting holes 81J, 82J, and 83J have a circular shape. With this configuration, by making the downstream openings 86A, 88A, and 90A circular, it is possible to suppress variations in the water discharge direction and flow rate of the water discharge holes 81J, 82J, and 83J.

In the shower device 80 according to embodiment 3, the upstream openings 86B, 88B, and 90B of the plurality of water spouting holes 81J, 82J, and 83J have a long hole shape. With such a configuration, if the length of the upstream openings 86B, 88B, 90B in the longitudinal direction is changed as shown in fig. 16, the water discharge direction of the water discharge holes 81J, 82J, 83J, etc. can be easily adjusted as shown in fig. 17A to 17C.

In the shower apparatus 80 according to embodiment 3, the water spray plate 84 is provided with a plurality of 1 st water spray holes 81J arranged at intervals on the circumference 92, and a plurality of 2 nd water spray holes 82J concentric with the 1 st water spray holes 81J and arranged at intervals on the circumference 93. The 1 st watering hole 81J has a 1 st pass-through region 222 and the 2 nd watering hole 82J has a 2 nd pass-through region 224. Regarding the dimension of the 1 st penetration region 222 that linearly penetrates the upstream opening 86B to the downstream opening 86A of the 1 st water jet hole 81J in the thickness direction T, the dimension X1 in the lateral direction in the cross section including the discharge direction 87 is set to be equal to or greater than a predetermined lower limit value and equal to or less than a predetermined upper limit value. As with the 1 st spout hole 81J, regarding the dimension of the 2 nd penetrating region 224 that linearly penetrates the upstream end opening 88B to the downstream opening 88A of the 2 nd spout hole 82J in the thickness direction T, the dimension X2 in the lateral direction in the cross section including the discharge direction 89 is set to be equal to or greater than the lower limit value and equal to or less than the upper limit value of the 1 st penetrating region 222.

With this configuration, the dual shower film can be discharged by providing the 2 nd water ejection hole 82J in addition to the 1 st water ejection hole 81J. Furthermore, by applying the lower limit value and the upper limit value of the dimension X1 of the 1 st penetration region 222 to the dimension X2 of the 2 nd penetration region 224 of the 2 nd water discharge hole 82J in the lateral direction, it is possible to suppress clogging of water in not only the 1 st water discharge hole 81J but also the 2 nd water discharge hole 82J, and to easily discharge water obliquely, thereby realizing a desired water discharge pattern. Further, by applying the same lower limit value and the same upper limit value to the lateral dimensions of the 1 st through region 222 and the 2 nd through region 224, the design becomes easy.

In the shower apparatus 80 according to embodiment 3, an angle β 1 formed by the discharge direction 87 of the 1 st water jetting hole 81J and the thickness direction T of the water jetting plate 84 is different from an angle β 2 formed by the discharge direction 89 of the 2 nd water jetting hole 82J and the thickness direction T of the water jetting plate 84. With this configuration, even when the water discharge angle of the 1 st water discharge hole 81J is different from the water discharge angle of the 2 nd water discharge hole 82J, the same lower limit value and the same upper limit value are applied to the lateral dimensions X1 and X2 of the through regions 222 and 224, whereby the water can be discharged with ease in a skewed manner while effectively suppressing clogging in any of the water discharge holes 81J and 82J, and the design is also made easy.

In embodiment 3, a case where 3 sets of the through hole groups 81, 82, and 83 are provided has been described, but the present invention is not limited to this case, and the number of the sets of the through hole groups may be two or 4 or more.

In addition, by appropriately combining the various forms described above, effects possessed by each of the forms can be achieved.

The present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, but various modifications and alterations will become apparent to those skilled in the art. Such changes and modifications are to be understood as included within the scope of the present invention as determined by the appended claims unless they depart therefrom. Further, combinations of elements and changes in the order of the elements of the embodiments may be implemented without departing from the scope and spirit of the present invention.

The present invention is useful for a shower head type shower device for a bathroom, a shower device used as a faucet in a kitchen or a toilet, and a water spray plate provided for the shower head type shower device or the shower device.

Claims (8)

1. A shower device having a water spray plate, characterized in that,

a plurality of water spray holes penetrating the water spray plate are arranged on the water spray surface of the water spray plate in a circumferential shape at intervals;

a direction in which a center line connecting an opening center of an upstream end and an opening center of a downstream end of each of the plurality of water discharge holes extends includes an inclination component with respect to a normal direction of the circumference in each water discharge hole when the water discharge surface is viewed in a plan view;

the dimension of a through region, which linearly penetrates the upstream end opening to the downstream end opening of each of the plurality of water discharge holes in the thickness direction of the water discharge plate, is set to be equal to or greater than a predetermined lower limit value and equal to or less than a predetermined upper limit value in a transverse direction in a cross section including the center line.

2. The spray device of claim 1,

the upper limit value is 0.4 mm.

3. Spraying device according to claim 1 or 2,

the lower limit value is 0.1 mm.

4. A spraying device as claimed in any one of claims 1 to 3,

the through region of each of the plurality of water jetting holes includes the entire opening of the downstream end.

5. The spraying device according to any one of claims 1 to 4,

the opening at the downstream end of each of the plurality of water discharge holes has a circular shape.

6. The spraying device according to any one of claims 1 to 5,

the opening at the upstream end of each of the plurality of water discharge holes has a long hole shape.

7. The spraying device according to any one of claims 1 to 6,

the plurality of water spray holes are a plurality of No. 1 water spray holes, and the through region is a No. 1 through region;

a plurality of 2 nd water jetting holes are further provided in the water jetting plate, and the plurality of 2 nd water jetting holes and the 1 st water jetting hole are arranged concentrically and circumferentially at intervals when viewed in a plan view;

a direction in which a center line connecting an opening center of an upstream end and an opening center of a downstream end of each of the 2 nd spout holes extends includes an inclination component with respect to a normal direction of the circumference in each of the spout holes when the spout surface is viewed in a plan view;

the dimension of the 2 nd penetration region, which linearly penetrates the opening at the upstream end to the opening at the downstream end of each of the 2 nd water discharge holes in the thickness direction of the water discharge plate, is set to be equal to or larger than the lower limit value and equal to or smaller than the upper limit value in the transverse direction in a cross section including the center line, the dimension being equal to or larger than the upper limit value in the 1 st penetration region.

8. The spray device of claim 7,

an angle formed by the center line of the 1 st water jetting hole and the thickness direction of the water jetting plate is different from an angle formed by the center line of the 2 nd water jetting hole and the thickness direction of the water jetting plate.

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